Improvement in dogs for sheet-metal-rolling mills



. W. MATTHIESSEN.

C. HEGELER 8Q noes FOR SHEET- AL ROLLING-MILLS. No; 194,598. PatentedAug. 28,1877.

knmzsses:

INVENTIIII UNITED STATES PATENT ()FFIGE.

EDWARD G. HEGELER AND FREDERICK W. MATTHIESSEN, OF LA SALLE, ILL.

IMPROVEMENT IN DOGS FOR SHEET-METAL-RO LLING MILLS.

Specification forming part of Letters Patent N 0. 194,598, dated August28, 1877; application filed June 4, 1877.

To all whom it may concern.-

Be it known that We, EDWARD O. HEGELER and FREDERICK W. MATTHIESSEN,ot'La Salle, in the county of La Salle and State of Illinois,

have invented a new and Improved Dog for Sheet-Metal-Rolling Mills, ofwhich the following is a specification:

Figure 1 is a vertical section taken on line or m in Fig. 2. Fig. 2 is aplan view.

Similar letters of reference indicate corresponding parts.

Our invention relates to the dogs (so called) that-are placed at therear side of the rolls used in the manufacture of sheet metal; and itconsists in a jointed dog, provided with frictionrollers, and with atail-piece or lever that sustains the weight of the dog, and also anypressure that may be exerted upon it by the sheets of metal passingthrough the rolls.

Dogs for this purpose, as ordinarily made, are formed from a singlepiece of metal, the full weight of one end of which rests upon the roll,and, us the roll revolves, the dog not only cuts the roll, causing it toproduce imperfect sheets of metal, but the roll also soon destroys thedog, and the expense of repair is incurred.

Another difficulty common to the ordinary style of dog is that thesheets of metal, in passing from the rolls over the dogs, becomescratched and injured in appearance. Byour improvement thesedifficulties are obviated.

Referring to the drawings, A and B are bars attached to some portion ofthe mill framing or to the housings at the rear of the roll 0.

Upon the bar A the curved casting D, having the notch E. is placed. Thelower end F of the casting D is curved, forming a tail-piece or leverthat rests against the front of the bar B. A nose-piece, G, is jointedto the front end of the casting D, and rests upon the roll 0. Rollers ab are journaled in the upper side of the casting D, on opposite sides ofthe bar A. The sheet metal, as it passes from the rolls, will bereceived by the nose-piece G, and directed so that it will pass over therolls a I) to the table of the rolling-mill.

The apparatus may be made of iron, brass, or other suitable material.

It will be seen that the weight of the cast ing and friction-rolls, andthe pressure of the sheets, are sustained by the tail-piece, and thatonly a part of the weight of the nose-piece rests upon the roll.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent- 1. A dog for sheet metal-rolling-millssupported by bars A B, and provided with the hinged nose-piece G,substantially as shown and described.

2. The combination of the casting D, having the curved end or tail-pieceF, and nosepiece G and the rollers a b, as shown and described.

EDWARD O. HEGELER. F. W. MATTHIESSEN. Witnesses: l

G. WEERTS, Jos. BRENNEMANN.

